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Name the phys...

Question

Name the physical quantities of which the units are : (i) volt, (ii) coulomb, (iii) ohm, (iv) ampere.

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Solution

(i) Potential difference (ii) charge (iii) resistance (iv) current.

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Q. Column I gives three physical quantities. Select the appropriate units for these from the choices given in column II. Some of the physical quantities may have more than one choice.

Column-I	Column - II
a) Capacitance	d) Ohm second
b) Inductance	e) Coulomb $^{2}$ joule $^{- 1}$
c) Magnetic induction	f) Coulomb volt $^{- 1}$
	g) Newton (ampere/metre) $^{- 1}$
	h) Volt second (ampere) $^{- 1}$

Q. Match the following combinations of electrical units with their terms as single unit:

Electrical unit	Single unit
(I) ampere-second	A. coulomb
(II) volt-ampere	B. ohm
(III) volt-ampere $^{- 1}$	C. ampere
(IV) walt/ampere ohm	D. watt
(V) joule / ampere second	E. volt

The unit of current is :

(a) ampere (b) volt

(c) ohm (d) coulomb.

Q. Physical Quantity having unit Volt/Ampere

Q. Some physical quantities are given in Column I and some possible SI units in which these quantities may be expressed are given in Column II. Match the physical quantities in Column I with the units in Column II.

\begin{matrix} Column I & Column II i & G M_{e} M_{S} & a. & (k g) (m e t r e)^{2} (s e c o n d)^{- 2} i i & 3 R T & b. & (f a r a d) (v o l t)^{2} (k g)^{- 1} i i i & F^{2} / q^{2} B^{2} & c. & (v o l t) (c o u l o m b) (m e t r e) \end{matrix}

Where G is universal gravitational constant;

M_{e}

= mass of the earth;

M_{s}

R

= universal gas constant;

T

= absolute temperature;

F

q

B

= magnetic field

(M A^{- 1} T^{- 2})

(1 volt = \frac{1 joule}{1 coulomb}; 1 farad = \frac{1 coulomb}{1 volt})

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